Support custom headline keywords

[amake]

          > @shelverizr Can you check https://github.com/amake/org_parser/pull/15 to confirm that that's what you had in mind?

@amake Not entirely, I want to switch from any keyword to any other keyword.

For example, I have two categories of tasks, to-do tasks and completed tasks, their keywords are:

To-do tasks: TODO, NEXT, WAITING, MAYBE
Completed tasks: DONE, FAILED, SUCCESS, STUCK, SHUNT

Sometimes I need to switch from NEXT to TODO
Sometimes I need to switch from WAITING to MAYBE
Sometimes I need to switch from STUCK to NEXT

Originally posted by @shelverizr in amake/org_parser#14 (comment)

[unhammer]

This would be great. I just use one sequence #+TODO: TODO HOLD DONE

[amake]

The main difficulty with this is that the parser needs to know the desired keywords at parse time, so I need one of two things:

• A way for users to input the equivalent of org-todo-keywords as a global setting. But I don't have a settings screen, and I don't want to make one.
• Or, to parse the document, interpret #+TODO: (or #+SEQ_TODO: or #+TYP_TODO:), and then re-parse

[unhammer]

I'd vote for #+TODO being enough, that way if one syncs org files, the keyword list is trivially synced with them.

[amake]

Interpreting #+TODO: and related keywords is implemented in v1.41.0, available for testing soon:

• iOS
• Android

[amake]

v1.41.5 is now released